Answer question 6,7,8,9,10,11,12,13
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7x + 4 = 25
7x = 25 - 4
7x = 21 x = 21/7
x = 3
so, your option is D
7. 3X + 7 = -20
3x = -20 + 7
3x = -13
x = -13/3
so, u r option is D
9. k + 7 = 16
k = 16-7
k = 9
8k - 72 = 8(9) - 72 = 72 - 72 = 0
so, u r option is A
10. 43m = 0.086
m = 0.086/43
m = 0.02
so,u r option is B
12. 3 + x = 8
x = 8 - 3
x = 5
so, u r option is D
13. 10 + 3x = 1
3x = 1 - 10
3x = -9 x = -9/3 = -3
so, u r option is B
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